1 /* SPDX-License-Identifier: MIT OR BSD-3-Clause */ 2 /* 3 * Copyright (C) 2016 The Android Open Source Project 4 */ 5 6 /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. 7 * Use of this source code is governed by a BSD-style license that can be 8 * found in the LICENSE file. 9 */ 10 11 #ifdef AVB_INSIDE_LIBAVB_H 12 #error "You can't include avb_rsa.h in the public header libavb.h." 13 #endif 14 15 #ifndef AVB_COMPILATION 16 #error "Never include this file, it may only be used from internal avb code." 17 #endif 18 19 #ifndef AVB_RSA_H_ 20 #define AVB_RSA_H_ 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif 25 26 #include "avb_crypto.h" 27 #include "avb_sysdeps.h" 28 29 /* Using the key given by |key|, verify a RSA signature |sig| of 30 * length |sig_num_bytes| against an expected |hash| of length 31 * |hash_num_bytes|. The padding to expect must be passed in using 32 * |padding| of length |padding_num_bytes|. 33 * 34 * The data in |key| must match the format defined in 35 * |AvbRSAPublicKeyHeader|, including the two large numbers 36 * following. The |key_num_bytes| must be the size of the entire 37 * serialized key. 38 * 39 * Returns false if verification fails, true otherwise. 40 */ 41 bool avb_rsa_verify(const uint8_t* key, 42 size_t key_num_bytes, 43 const uint8_t* sig, 44 size_t sig_num_bytes, 45 const uint8_t* hash, 46 size_t hash_num_bytes, 47 const uint8_t* padding, 48 size_t padding_num_bytes) AVB_ATTR_WARN_UNUSED_RESULT; 49 50 #ifdef __cplusplus 51 } 52 #endif 53 54 #endif /* AVB_RSA_H_ */ 55